Inheritance: Key Terms Genes & alleles A chromosome is a long DNA molecule which contains genes that code for several different proteins A gene is a length of DNA that codes for a single polype...
Mutations A gene mutation is a change in the sequence of base pairs in a DNA molecule that may result in an altered polypeptide Mutations occur continuously and spontaneously Errors in the DNA ofte...
DNA Replication Before a (parent) cell divides, it needs to copy the DNA contained within it Doubling the DNA ensures that the two new (daughter) cells produced will both receive full copies of the...
Practical: Investigating the Effect of Enzyme and Substrate Concentrations Enzyme concentration Enzyme concentration affects the rate of reaction The higher the enzyme concentration in a reaction m...
Mode of Enzyme Action Enzymes are globular proteins This means their 3D shape (as well as the shape of the active site of an enzyme) is determined by the complex tertiary structure of the protein t...
Enzymes as Catalysts Enzymes are biological catalysts ‘Biological’ because they function in living systems ‘Catalysts’ because they speed up the rate of chemical reactions without being used up or ...
Fibrous Proteins: Structure & Function Structure Fibrous proteins are long strands of polypeptide chains that have cross-linkages due to hydrogen bonds These proteins have little or no tertiary...
Globular Proteins: Structure & Function Structure Globular proteins are Compact Roughly spherical (circular) in shape Globular proteins form a spherical shape when folding into their tertiary s...
2022年美国数学建模大赛 HiMCM & MidMCM公布赛题 参赛学生 HiMCM：最多4名9-12年级在校高中生 MidMCM：2-4名14岁半或以下在校初中生 比赛时间 🔔 提交时间：2022年11月2日3:01 pm-11月15日8:00 pm...
作为一所“强势”的理工牛校， MIT想必是很多同学的向往！ 你知道MIT青睐怎样的学生吗？ 有多少中国学霸已经圆梦MIT了？ MIT本周发布了2022年学生数据， 一起来看看吧！ 1MIT在读学生数据 据MIT留学生办公室公布的...
在今天直播的2022深圳全球创新人才论坛上，著名科学家颜宁宣布，即将辞去普林斯顿大学教职，全职回国。 颜宁回国后，将在深圳创立医学科学院，她也是近年来深圳市重磅引进的又一高端人才。 不走寻常路的“奇女子” ...
重要消息！重要消息！ 香港AP考试报名今日截止 韩国即将于11月8日截止 新加坡第二轮AP报名已开启 香港考区新增考位，今日截止报名 香港考场于10月31日新增7门科目报考名额，还没有抢到考位的同学和家长抓紧最后的...
